The Global Volcanism Program has no Weekly Reports available for The Quill.

The Global Volcanism Program has no Bulletin Reports available for The Quill.

Volcano Types

Stratovolcano
Lava dome

Tectonic Setting

Subduction zoneOceanic crust (< 15 km)

Rock Types

Major
Andesite / Basaltic Andesite

Minor
Rhyolite
Dacite
Basalt / Picro-Basalt

Population

Within 5 kmWithin 10 kmWithin 30 kmWithin 100 km

2,195
2,195
8,361
134,936

Geological Summary

The Quill is a large dominantly andesitic stratovolcano that forms the SE end of St. Eustatius (Statia) Island. The 601-m-high volcano was formed about 32,000-22,000 years ago by rhyolitic eruptions on a shallow-water limestone bank 3 km offshore of an older 0.2 million years old volcanic center exposed at the NW end of the island. The interaction of rhyolitic magma with sea water produced pyroclastic-surge deposits, rich in limestone fragments, that joined the two islands and blanket the entire slopes of The Quill. The surges also swept across the older island and incorporated carbonized plant remains, shell fragments, and remains of fossil hermit crabs. A likely cryptodome tilted up limestones at Sugarloaf on the southern coast. A steep-sided crater, 760 m wide and more than 300 m deep caps The Quill; a notch on the western rim of the crater has directed the youngest pyroclastic flows towards the island's capital, Orangestad. The last dated eruption of The Quill produced pyroclastic flows about 1600 years ago.

This compilation of synonyms and subsidiary features may not be comprehensive. Features are organized into four major categories: Cones, Craters, Domes, and Thermal Features. Synonyms of features appear indented below the primary name. In some cases additional feature type, elevation, or location details are provided.

Synonyms

Round Hill

Cones

Feature Name

Feature Type

Elevation

Latitude

Longitude

Boven

Stratovolcano

17° 31' 4" N

62° 59' 52" W

Gilboa Hill

Stratovolcano

17° 30' 42" N

62° 59' 13" W

Little Mountain

Stratovolcano

17° 30' 20" N

62° 59' 40" W

Mary's Glory

Stratovolcano

17° 30' 0" N

62° 59' 20" W

Signal Hill

Stratovolcano

17° 29' 42" N

62° 59' 27" W

Domes

Feature Name

Feature Type

Elevation

Latitude

Longitude

Bergje

Dome

17° 30' 29" N

62° ' " W

Sugarloaf

Dome

17° 28' 0" N

62° 58' 0" W

Photo Gallery

The Quill stratovolcano (center) forms the SE end of Statia (St. Eustatius) Island. Pleistocene volcanic rocks form the hill at the lower left, and Mount Liamuiga volcano on St. Kitts (St. Christopher) Island rises across the strait at the right center. A steep-sided 760-m-wide crater truncates the summit of The Quill, which was formed about 32,000-22,000 years ago by rhyolitic eruptions on a shallow-water limestone bank. Pyroclastic-flow and -surge deposits, the last of which were erupted about 400 AD, blanket the slopes of the volcano.

Photo by John Shepherd, 2000 (Seismic Research Unit, University of West Indies).

References

The following references have all been used during the compilation of data for this volcano, it is not a comprehensive bibliography. Discussion of another volcano or eruption (sometimes far from the one that is the subject of the manuscript) may produce a citation that is not at all apparent from the title.

WOVOdat is a database of volcanic unrest; instrumentally and visually recorded changes in seismicity, ground deformation, gas emission, and other parameters from their normal baselines. It is sponsored by the World Organization of Volcano Observatories (WOVO) and presently hosted at the Earth Observatory of Singapore.

EarthChem develops and maintains databases, software, and services that support the preservation, discovery, access and analysis of geochemical data, and facilitate their integration with the broad array of other available earth science parameters. EarthChem is operated by a joint team of disciplinary scientists, data scientists, data managers and information technology developers who are part of the NSF-funded data facility Integrated Earth Data Applications (IEDA). IEDA is a collaborative effort of EarthChem and the Marine Geoscience Data System (MGDS).